Woodside, Michael D., and Simeri, Benjamin R., 1995, Land use and nutrient concentrations and yields in selected streams in the Albemarle-Pamlico Drainage Basin, North Carolina and Virginia: U.S. Geological Survey Open-File Report 95-457, 4 p. Available Online

Clark, Gregory M., 1994, Assessment of selected constituents in surface water of the Upper Snake River Basin, Idaho and western Wyoming, water years 1975-89: U.S. Geological Survey Water-Resources Investigations Report 93-4229, 49 p. Available Online

Cowdery, T.K., and Goff, K.L., 1994, Nitrogen concentrations near the water table of the Sheyenne Delta aquifer beneath cropland areas, Ransom and Richland counties, North Dakota: North Dakota Water Quality Symposium Proceedings, March 30-31, 1994 Fargo, North Dakota, p. 89-102.

Johnson, Steven M., and Swanson, Robert B., 1994, Operational procedures for collecting water-quality samples at monitoring sites on Maple Creek near Nickerson and the Platte River at Louisville, Eastern Nebraska: U.S. Geological Survey Open-File Report 94-121, 24 p. Available Online

McMahon, P.B., Litke, D.W., Paschal, J.E., and Dennehy, K.F., 1994, Ground water as a source of nutrients and atrazine to streams in the South Platte River Basin: American Water Resources Association Water Resources Bulletin, vol. 30, no. 3, p. 521-530. doi: 10.1111/j.1752-1688.1994.tb03310.x Available Online

Puckett, Larry J., 1994, Nonpoint and point sources of nitrogen in major watersheds of the United States: U.S. Geological Survey Water-Resources Investigations Report 94-4001, 9 p. Available Online

Ruhl, Peter M., 1994, Surface-water-quality assessment of the upper Illinois River Basin in Illinois, Indiana, and Wisconsin: Analysis of relations between fish-community structure and environmental conditions in the Fox, Des Plaines, and Du Page River Basins in Illinois, 1982-84: U.S. Geological Survey Water-Resources Investigations Report 94-4094, 50 p. Available Online

Rupert, Michael G., 1994, Analysis of data on nutrients and organic compounds in ground water in the Upper Snake River Basin, Idaho and western Wyoming, 1980-91: U.S. Geological Survey Water-Resources Investigations Report 94-4135, 40 p. Available Online

Tornes, L.H., and Brigham, M.E., 1994, Nutrients, suspended sediment, and pesticides in waters of the Red River of the North Basin, Minnesota, North Dakota, and South Dakota, 1970-1990: U.S. Geological Survey Water-Resources Investigations Report 93-4231, 62 p. Available Online

Woodside, M.D., 1994, Land use in and water quality of the Pea Hill arm of Lake Gaston, Virginia and North Carolina, 1988-90: U.S. Geological Survey Water-Resources Investigations Report 94-4140, 54 p. Available Online